He suspected EMF interference so as a quick first step he decided to throw together an EMF detector using an Arduino. It uses a bank of LEDs as an indicator bar to reflect the EMF picked up by the ...

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close proximity sensor. As you can ...

While the Arduino organisation has been making industrial single-board ... It is essentially DIN-rail module with relay outputs and sensor inputs – four 10A 250V (400Vmax) relays for load switching (4 ...